Page 63 - การระบายน้ำ

5-15
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ตารางท 5.4 Minium cover requiremments, in feet, for airfields (CMP)
ี
Weight 1 2 3 4
type 5,000-lb Single-wheel 15,000-lb Single-wheel 25,000-lb Single-wheel 40,000-lb Single-wheel
Pipe Dia 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72
(in)
GAGE

16 1.0 1.0 1.0 1.5 1.5 2.0 2.0 3.0
14 1.0 1.0 1.5 1.0 1.0 2.0 1.0 1.5 2.5 1.5 2.5 3.5
12 1.0 1.0 1.5 1.0 1.0 2.0 1.5 2.0 3.0 1.5 2.5 3.5
10 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.5 2.0 1.0 1.5 2.0 2.5 3.0 1.5 2.0 2.5 3.0 3.5
8 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.5 1.0 1.5 2.0 2.5 2.0 2.0 2.5 3.0
Weight 5 6 7 8
type 60,000-lb Single-wheel 20,000-lb Twin-wheel assy 40,000-lb Twin-wheel assy 60,000-lb Twin-wheel assy
Pipe dia 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72
(in)

GAGE
16 2.5 4.0 1.0 1.5 2.0 2.5 2.5 3.5
14 2.0 3.5 4.0 1.0 1.0 1.5 1.0 2.0 3.5 2.0 3.0 4.0
12 3.0 3.5 4.0 1.0 1.5 1.5 1.0 2.0 3.5 2.0 3.0 4.0
10 2.5 3.0 3.5 4.0 4.5 1.0 1.0 1.0 1.5 2.0 1.0 2.0 2.0 2.5 3.0 2.0 3.0 3.5 3.5 4.0
8 2.5 3.0 3.5 4.0 1.0 1.0 1.0 1.5 2.0 2.0 2.0 2.5 2.0 3.0 3.5 3.5
Weight 9 10 11 12
type 80,000-lb Twin-wheel assy 100,000-lb Twin-wheel assy 120,000-lb Twin-wheel assy 40,000-lb Single-tandom assy

Pipe dia 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72
(in)
GAGE
16 2.5 4.5 3.0 5.0 3.0 5.5 1.5 2.0
14 2.5 3.5 4.5 3.0 4.0 5.5 3.0 4.5 6.5 1.0 1.5 3.0
12 3.0 4.0 4.5 3.5 4.5 5.5 3.5 5.0 6.5 1.0 1.5 3.0
10 2.5 3.5 4.5 4.5 5.0 3.0 4.0 5.0 5.5 6.0 3.5 5.0 5.5 6.5 7.0 1.0 1.5 1.5 2.0 2.5
8 3.0 3.5 4.5 4.5 3.5 4.0 5.0 5.5 4.0 5.0 5.5 6.5 1.5 1.5 1.5 2.0
Weight 13 14 15 16

type 60,000-lb Single-tandom assy 150,000-lb Twin-tandom assy 200,000-lb Twin-tandom assy 265,000-lb Twin-tandom assy
Pipe dia 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72 12 24 36 48 60 72
(in)
GAGE
16 2.0 3.0 2.5 5.5 3.0 6.0 3.5 7.0
14 1.5 2.5 3.5 2.0 4.5 6.5 2.0 4.5 7.5 2.5 6.0 9.0
12 1.5 2.5 3.5 3.5 5.5 6.5 3.5 6.5 7.5 4.5 8.0 9.0
10 1.5 2.5 3.0 3.0 3.5 3.0 5.0 6.0 6.5 7.0 3.5 6.0 7.0 7.5 8.0 4.0 7.0 8.5 9.0 9.5

8 2.0 2.5 3.0 3.0 4.5 5.5 6.0 6.5 5.5 7.0 7.0 7.5 6.5 8.0 8.5 9.0